Power Systems Which of the following transformer is used in sub station for operating a protective relay? distribution transformer capacitor voltage transformer All of these auto transformer distribution transformer capacitor voltage transformer All of these auto transformer ANSWER DOWNLOAD EXAMIANS APP
Power Systems A fuse wire of circular cross-section has a radius of 0.8 mm. The wire blows off at an current of 8 Amp. Calculate the radius of wire that will blow off at an current of 1 amp? 0.4 mm. 4 mm. 0.2 mm. 2 mm. 0.4 mm. 4 mm. 0.2 mm. 2 mm. ANSWER DOWNLOAD EXAMIANS APP
Power Systems Operating cost of thermal power station is less than that of nuclear power plant. less than that of hydroelectric power plant. is the same as that of nuclear power plant. less than that of diesel power plant. less than that of nuclear power plant. less than that of hydroelectric power plant. is the same as that of nuclear power plant. less than that of diesel power plant. ANSWER DOWNLOAD EXAMIANS APP
Power Systems The per unit value of a 2 ohm resistor at 100 MVA and 10 kV base voltage is 2 pu 0.5 pu 4 pu 0.2 pu 2 pu 0.5 pu 4 pu 0.2 pu ANSWER DOWNLOAD EXAMIANS APP
Power Systems The corona loss on a particular system at 50 Hz is 1 kW/km per phase. What is the corona loss at 60 Hz in kW/km per phase? 1.25 0.89 1 1.13 1.25 0.89 1 1.13 ANSWER DOWNLOAD EXAMIANS APP
Power Systems Surge impedance loading of a transmission line can be increased by both 1 and 3 increasing its voltage level addition of lumped capacitance in series addition of lumped inductance in parallel both 1 and 3 increasing its voltage level addition of lumped capacitance in series addition of lumped inductance in parallel ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS